Choose the one most appropriate answer for each.
-Dosage compensation
A)A condensed X chromosome
B)Protein that combines with DNA all along its length
C)Attaches or detaches from operator to regulate transcription
D)Portion of the operon that binds RNA polymerase
E)Genes that induce expression of other genes
F)Genes controlling the development of specific body parts
G)Mechanism of equalizing gene expression between the sexes
H)Binding sites on DNA for regulatory proteins that increase transcription rates

Question

Quizplus · Accepted Answer

Dosage compensation is the mechanism that balances the expression of sex-linked genes between males and females. In mammals, females have two X chromosomes while males have only one. Dosage compensation effectively doubles the expression of genes on the X chromosome in males to match the expression in females.

Answer: A 
 Dosage compensation involves inactivating one of the X chromosomes in females to balance X-linked gene expression with males who have only one X chromosome. This inactivated X chromosome is highly condensed and silenced, forming a visible structure called the Barr body.

Note: The other answer choices are not directly related to dosage compensation.

Choose the One Most Appropriate Answer for Each